#include <stdio.h>
#include <unistd.h>
#include <cstdlib>

int main(int argc,char* argv[])
{
	printf("============old process===========");

	char* null = NULL;

	char* argin[] = {"./show_argv", "hello", "world", null};
	// char* argin[] = {"./show_argv", "hello", "world", (char*)NULL};
	execvp(argin[0], argin);

	perror("execvp failed");
	exit(1);
}
